Colorado hail map — June 21, 2026
NOAA radar detected hail of an inch or more over 1 Colorado city on June 21, 2026. The largest stones — 1.00″, quarter size — fell over Boulder.
- Cities hit
- 1
- in Colorado
- Largest stone
- 1.00″
- quarter size
- Impact rating
- 3/10
- from stone size
Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
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Colorado cities hit on June 21, 2026
What people on the ground measured in Colorado on June 21, 2026
6 reports filed with the National Weather Service — 5 from trained spotters or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.
- 2.75″ baseball size Trained Spotter1 SW St Petersburg, CO7:43 PM MDTLogan County
- 2.75″ baseball size Trained Spotter1 S St Petersburg, CO7:46 PM MDTLogan County
- 2.00″ hen egg size Storm Chaser3 ENE Highland Center, CO8:35 PM MDTPhillips County
- 1.75″ golf ball size Trained Spotter4 SE Reiradon Hill, CO7:30 PM MDTLogan County
- 1.00″ quarter size Trained Spotter5 SSE Reiradon Hill, CO7:30 PM MDTLogan County
- 0.88″ penny size Trained Spotter3 SE Kit Carson, CO4:36 PM MDTCheyenne County
Trained spotter estimates nickel sized hail falling as of time of report.
Reports come from the National Weather Service Local Storm Report feed, ingested every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.
Other states hit on June 21, 2026
The full US hail map for June 21, 2026 →Other Colorado hail days
Colorado hail on June 21, 2026
NOAA radar put hail of an inch or more over 1 Colorado city that day. The largest stones — 1.00 inches, quarter size — were over Boulder. Every city hit is listed above with its own stone size.